<!DOCTYPE html>
<html lang="en">

    <head>
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>Document</title>
    </head>

    <body>

        <style>
            strong {
                font-style: italic;
                color: gray;
            }
        </style>
        <p>Now <strong>strong text</strong> is italic and gray.</p>

    </body>

</html>